David Megginson has suggested a small activity to define a standard mechanism for indicating multiple output documents in XSLT.

Pointing out that XT, Xalan and SAXON all have different ways of changing the current output document, he suggested "a couple of XSL software writers or users getting together and writing friendly a one-page document defining an extension element for multiple output documents"

He went on to suggest that the resultant mini-spec be published as a W3C Note through "an obliging vendor".

Related item: David Carlisle suggests XPath extension functions for SVG.